Adds user guide on advanced query classes

[justin-cechmanek]

This PR adds a notebook to our RedisVL user guides that demonstrated advanced query classes: TextQuery, HybridQuery, and MultiVectorQuery.

[Copilot]

Pull Request Overview

Adds a new user guide notebook demonstrating advanced RedisVL query classes (TextQuery, HybridQuery, MultiVectorQuery) and slightly adjusts cleanup formatting in an existing notebook.

• Introduces comprehensive examples for text, hybrid, and multi-vector queries.
• Defines a sample schema and dataset to illustrate query capabilities.
• Replaces a standalone markdown cleanup header with an inline code comment in another guide.

Reviewed Changes

Copilot reviewed 2 out of 2 changed files in this pull request and generated 2 comments.

File	Description
docs/user_guide/09_advanced_queries.ipynb	New notebook showcasing advanced query classes with schema, data loading, and varied query examples.
docs/user_guide/05_hash_vs_json.ipynb	Minor change: removed markdown cleanup header and added a code comment before index deletion.

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[tylerhutcherson]

Looks good! 2 small comments to take as you wish:

• In hybrid searches, its best practice to use the normalized BM25 scorer so that final scores are properly balanced prior to weighting.
• At the end in the comparison, it could be good to run the same query through all query types and report the top match and score in a clean table for comparison (ideally something that shows the difference?)